Argyle climate

Argyle Frost Dates and Growing Season

NOAA 1991-2020 normals for Denton Muni AP, 9.6 km from Argyle, elevation 642 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Denton Muni AP. A median date has an even chance of a later freeze in spring, or an earlier one in fall.

The last spring freeze typically comes around March 24 and the first fall freeze around November 7, a growing season of about 227 days.

Median at 36°F
last April 8, first October 30
Median at 32°F
last March 24, first November 7
Median at 28°F
last March 9, first November 20

Last freeze in spring

The chance of a later freeze than the date shown. At 10 percent, one spring in ten still freezes after the date; planting after the 10 percent date for 32°F is the cautious choice.

Threshold10%20%30%40%50%60%70%80%90%
36°FApr 27Apr 22Apr 18Apr 13Apr 8Apr 5Mar 31Mar 26Mar 19
32°FApr 17Apr 8Apr 4Mar 30Mar 24Mar 20Mar 16Mar 10Mar 3
28°FApr 3Mar 24Mar 17Mar 13Mar 9Mar 5Mar 1Feb 25Feb 18
24°FMar 16Mar 10Mar 5Mar 1Feb 25Feb 20Feb 14Feb 7Jan 29
20°FMar 6Feb 27Feb 19Feb 13Feb 6Jan 31Jan 26Jan 18Jan 5
16°FFeb 20Feb 10Feb 4Jan 30Jan 24Jan 18Jan 11Jan 2Dec 21

First freeze in fall

The chance of an earlier freeze than the date shown. At 10 percent, one fall in ten freezes before the date.

Threshold10%20%30%40%50%60%70%80%90%
36°FOct 15Oct 20Oct 23Oct 26Oct 30Nov 1Nov 3Nov 7Nov 13
32°FOct 22Oct 27Nov 1Nov 3Nov 7Nov 10Nov 15Nov 20Nov 26
28°FNov 1Nov 7Nov 11Nov 16Nov 20Nov 25Nov 29Dec 2Dec 7
24°FNov 12Nov 20Nov 26Nov 30Dec 3Dec 6Dec 11Dec 18Dec 26
20°FNov 27Dec 3Dec 8Dec 14Dec 20Dec 26Jan 1Jan 8Jan 16
16°FDec 6Dec 14Dec 20Dec 28Jan 1Jan 6Jan 12Jan 20Feb 4

Growing season length

Days between the last spring and first fall freeze at each threshold, with the chance of a season at least that long.

Threshold10%20%30%40%50%60%70%80%90%
36°F228219212207202198192187181
32°F255245239233227221216209199
28°F283273266261256250244237225
24°F312302296289283277271264255
20°F351338329323315309301293281
16°F365365361352345338331323309

How often it gets that cold

The share of years with at least one night at or below each temperature.

36°F or colder
100% of years
32°F or colder
100% of years
28°F or colder
100% of years
24°F or colder
100% of years
20°F or colder
97% of years
16°F or colder
73% of years

Degree days

A degree day is one degree of the daily mean temperature beyond a base, for one day. Heating degree days count cold (the fuel a house burns), cooling degree days heat, growing degree days the warmth a crop needs; each crop has its own base.

Heating degree days, base 65°F
2,637
Cooling degree days, base 65°F
2,475
Growing degree days, base 40°F
9,128
Growing degree days, base 45°F
7,505
Growing degree days, base 50°F
6,021
Growing degree days, base 55°F
4,683
Growing degree days, base 60°F
3,498

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January654150
February475591
March30126238
April12773403
May20240685
June0460910
July06031,068
August05901,055
September7344787
October107112475
November34017193
December607365

What this means

NOAA computes these from the daily lows at the station over 1991-2020, fitting the dates of each year's last and first freeze to a distribution, so a date can be stated at any level of risk. 36°F is a frost risk for tender plants on a clear, calm night, since the ground cools below the air above it; 32°F is a freeze; 28°F is a hard freeze that kills most annuals.

The station is 9.6 km from Argyle. Low ground, valleys and open fields freeze earlier and later than a town center or a hillside.

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Sources

NOAA NCEI U.S. Climate Normals, 1991-2020, annual and seasonal normals for station USW00003991 (Denton Muni AP). Public domain.